Keep fog, dew, and condensation from forming on your camera, spotting scope, or telescope lens with this 15.7" USB Lens Heater for Camera & Telescope Lenses from Neewer. The black/purple heating strap wraps around lenses up to 127mm in diameter and warms the glass with power supplied by an integrated 6' cable to a 5V/2A USB-A port. The temperature regulator provides three settings: High Mode (125.6°F), Middle Mode (113°F), and Low Mode (98.6°F). The warmer secures around your lens via touch-fastener.

Prevents Dew, Fog & Condensation    For Lenses up to 127mm Diameter    Low, Middle & High Temperature Control    Integrated 6' Long USB Cable

• FPC (Flexible Printed Circuit) technology provides improved thermal conductivity and efficient heating performance.
• Use with camera, telescope, and scope lenses with a circumference of up to 15.7".
• Lens heater features overheating and overvoltage protection for safety.
• The lens heater bends but must not be folded.

Related Questions and Answers

Q: 1. Will the Sigma USB Dock work with my late 2008 Macbook Pro Laptop with OS X Yosemite 10.10.4 software?

A: Yes it should be working just fine. You may need to check Sigma website to get the latest driver updates.

Q: 2. I have the nano now with the port keys bm5 touch screen and this cable. Would it act like an auto focus with a manual lens?

A: This cable will allow you to focus manual lenses controlled by the Nucleus Nano using the BM5 touch screen. You will be able to touch an area of the screen and the Nucleus motors will pull focus to the area of your choice.

Q: 3. Does it make sense to buy to upgrade firmware Sigma 18-35/1.8 for Sony? Or there was no update for this lens? I have it not work correctly through the LA-EA3 with A6300.

A: I don't think there is a firmware update for the Sony mount version of the 18-35mm f/1.8.However, you almost for sure need the dock to adjust your autofocus, because I have never heard of the 18-35 having perfect autofocus on a Sony camera yet. I had to do a lot of adjusting to get my focus correct.As for it not working with the la-ea3 and the a6300, I don't know if there is a fix for that.Good luck.

Q: 4. Do the batteries work with Z6 iii?

A: Yes, the batteries in the Neewer EN-EL15c Batteries and USB Charger Kit are compatible with the Nikon Z6 III Mirrorless Camera.

Q: 5. Will this charge larger batteries like the Watson NP-F970 High-Capacity Lithium-Ion Battery Pack (7.4V, 10,050mAh)?

A: Yes, the Neewer Two NP-F970 6600mAh Batteries with Dual Charger will be able to charge other brands of NPF-L-style batteries and larger sizes like the NP-F970 batteries.

Q: 6. What is the brightness of the lighting? What exposure settings on a 35mm DSLR lens? (concerned that it isn't bright enough)

A: The Godox LSD40 Light Tent (15.7 x 15.7 x 15.7") is bright. But most use a tripod. And using a tripod you just increase the exposure time if you need to.

Q: 7. Do I need to buy back ground paper?

A: No, The Godox LSD40 Light Tent (15.7 x 15.7 x 15.7") comes with a white background.

Q: 8. Do all sizes have the 3 light strips? Can the light strips and controller be purchased separately?

A: Yes, all sizes of the Godox Light Tent come with the three light strips. Neither the strip lights, nor the controller, are sold separately.

Q: 9. are these Lithium batteries?

A: Yes, the Neewer EN-EL15c Batteries and USB Charger Kit are lithium batteries.

Q: 10. Can this be used with the Sigma 85 1.4?

A: Yes, you can use in various models of sigma lens 24.35 and 85mm